SELGE, F.; HAGEL, H.; GUNKEL, G.; DOLUSCHITZ, R. ANNUAL RAINFALL VARIABILITY AND ECONOMICAL DEPENDENCY OF SMALLHOLDER AGRICULTURE IN THE SEMI-ARID NORTHEASTERN REGION OF BRAZIL. Revista Brasileira de Ciências Ambientais, Rio de Janeiro, n. 36, p. 155–167, 2015. DOI: 10.5327/Z2176-947820151009. Disponível em: https://www.rbciamb.com.br/Publicacoes_RBCIAMB/article/view/197. Acesso em: 3 feb. 2025.